$TSHA

$4.25 +$0.24 (5.99%) Close

$TSHA Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 325.8M shares outstanding

Who owns TSHA?

By type of holder

Institutions 91.5% Insiders 6.8% Everyone else 1.7%

Concentration Top 10 holders own 59.5%

Paul B Manning 7.9% · Avoro Capital Advisors LLC 7.3%

Institutional ownership

91.5%

+10.0 pts vs last qtr

Institutional holders

206

+15 vs last qtr

Net shares bought

+32.4M

by institutions in Q2 2026

New / sold out

40 / 25

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

MPM Bioimpact LLC NEW +4.5M
Wellington Management Group LLP +3.3M

Biggest sellers in Q2 2026

Deerfield Management Company, L.P. SOLD OUT −2.7M
SG Americas Securities, LLC −2.0M

Who is planning to sell?

Notices of proposed sale, last 12 months

$7.83M

17 notices from 8 people

Shares covered

1.5M

0.47% of the company

Arranged in advance

41%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Nagendran Sukumar Officer $5.02M
Sean P. Nolan Officer $856K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2023–FY2025

+175.3%

+65.93% a year

Each share's claim on the business

−63.7%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $34.3M

over 3 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years31% 3–5 years1% 1–3 years55% Under 1 year13%

Quarterly turnover

11.2%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting TSHA on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AC Avoro Capital Advisors LLC	23.9M	7.33%	+2.2M (+10.1%)	2023	1.5%
Shares held by quarter Peak holding23.9M (Q2'26) Change over 8 quarters+5.2M Share of the company7.330% Avoro Capital Advisors LLC's full portfolio →
RC Ra Capital Management, L.P.	23.6M	7.23%	Unchanged	2023	1.4%
Shares held by quarter Peak holding23.6M (Q2'25) Change over 8 quarters+12.7M Share of the company7.230% Ra Capital Management, L.P.'s full portfolio →

Avoro Capital Advisors LLC

23.9M

% of company

7.33%

Change vs last qtr

+2.2M (+10.1%)

Held since

2023

Ra Capital Management, L.P.

23.6M

% of company

7.23%

Change vs last qtr

Unchanged

Held since

2023

28 more super investors behind a free account

See every manager holding Taysha Gene Therapies, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting TSHA on Form N-PORT; together they hold 18.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$62.2M	9.1M	2.80%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$42.5M	6.2M	1.92%	0.05%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$62.2M

% of company

2.80%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$42.5M

% of company

1.92%

% of the fund

0.05%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Taysha Gene Therapies, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
PB Paul B Manning 5%+ holder 13D · 9.8%	25.6M	7.86%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company7.860% Disclosed stake13D · 9.8% View the 13D/G filing →
PB The Paul B. Manning Revocable Trust dated May 10, 2000 5%+ holder 13D · 5.6%	14.7M	4.52%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company4.520% Disclosed stake13D · 5.6% View the 13D/G filing →

Paul B Manning

5%+ holder13D · 9.8%

25.6M

% of company

7.86%

Change vs last qtr

—

Held since

—

The Paul B. Manning Revocable Trust dated May 10, 2000

5%+ holder13D · 5.6%

14.7M

% of company

4.52%

Change vs last qtr

—

Held since

—

11 more holders behind a free account

See every insider and 5%+ holder of Taysha Gene Therapies, Inc..

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